Ive used a bunch of different meeting apps. They all pretty much do the same thing on ipad - open a document (PDF, Word, etc) and statically share it. Good for training, not much good for interactive work, like working on network layouts. This is the first that not only lets you do that (I havent found a file type it doesnt like), you can pretty much do the same things you can do in Visio and share it in realtime. It even has built-in graphic icons... I can illustrate how I think the network should be configured for the customer, update it in realtime, and get their agreement. Done, and from my ipad right in front of them, and we can see each other while we talk! The whiteboard thing is neat - need more space, just move over, up,down, or wherever you want. Import or take a photo and use it, handy when people also scribble on real whiteboards.